Potential Exploitation of CVE-2022-21919 or CVE-2021-34484 for LPE
Detects potential exploitation attempts of CVE-2022-21919 or CVE-2021-34484 leading to local privilege escalation via the User Profile Service. During exploitation of this vulnerability, two logs (Provider_Name: Microsoft-Windows-User Profiles Service) with EventID 1511 and 1515 are created (EventID 1515 may generate many false positives). Additionally, the directory \Users\TEMP may be created during exploitation. This behavior was observed on Windows Server 2008.
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Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.
Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.
detection:
selection:
EventID: 1511
Provider_Name: 'Microsoft-Windows-User Profiles Service'
condition: selectionCorrupted user profiles - https://social.technet.microsoft.com/wiki/contents/articles/3571.windows-user-profiles-service-event-1511-windows-cannot-find-the-local-profile-and-is-logging-you-on-with-a-temporary-profile.aspx
Tactics
Other